Boat pumps



April 4, 1961 J. sKovRANEK y BOAT PUMPS Filed July 8, 1957 ATTORN'EY United ,States Patent BOAT PUMPS John Skovrauek, 44 Luther Ave., Hopelawn RO., Perth Amboy, NJ.

Filed July 8, 1957, Ser. No. 670,523

2 Claims. (Cl. 114-183) This invention relates to a sump pump for pumping out the water that may collect in the bottom of a boat. It is the object of this invention to provide a new and improved device which will utilize the constant motion of the boat due to waves upon the water for operating a pump to pump out from the boat any 'water that may have collected from splashing waves, rain, or otherwise.

This invention is an improvement over my co-pending application Serial No. 619,299, tiled October 30, 1956, now Patent No. 2,291,499, in that the same results are accomplished by a simpler mechanism.

In the drawings the Figure 1 shows a top plan view of the Iprow of the boat mooredby -a line, with the mechanism of this invention installed in the prow of the boat, and so connectedV as to be operated by intermittent pull of the line.

Figure 2 is an enlarged section of the line 2-2 of Figure l.

In the drawings the numeral represents the sides of the prow of the boat, meeting at a bow post 11. 12 represents the bottom of the boat. Mounted on the bottom of the boat, preferably at its lowest point is a valve mechanism 13 operated by intermittent suction from a diaphragm suction pump 14, which is sustained by bolts 15 upon the post 11. The mechanism 13 cornprises primarily, in the form shown, a cylinder 17 having a discharge v-alvev at its top and an inlet Valve at its bottom, and the cylinder 17 has a side opening 20 connected by a hose 21 with the discharge opening 22 of the pump 14. The discharge valve preferably comprises a conical valve -seat 23 in which there rests a ball 24. This ball is preferably made of a plastic so that it may be relatively light and noncorrosive. This valve is enclosed in a chamber 25 connected to a hose 26, the end of which may be thrown over the side of the boat.

The inlet valve may take the form of an upwardly facing cone seat 27 and a mating cone valve 28, which is held in alignment with the seat by a stem 29, passing through a bearing in a bracket 30 spaced from the bottom of the chamber 17.

The chamber 17 is supported by a base 31 having suitable openings to permit the ow of water into the chamber and provided with `a screen 32 to prevent leaves and other foreign matter from entering the chamber and blocking the valve. A lever 33 is pivoted at 34 in a slot in the side of the base and has one arm 35 in position to engage the stem 29 and it has another arm 36 carrying at its end a oat 37, and this arm and oat are so designed that when there is no water in the boat and the float is on the bottom of it, the valve 28 is held open all the time, but when there is water in the boat the oat 37 rises and the arm can no longer interfere with the -normal operation of the valve 28.

The pump 14 comprises a rigid shell or casing 40 in `the `form of a dished disc,A having an opening 41 at its '2,977,922 4 Patented ,Apr. 4, 1961 ICC center connected to the hose 2l. This shell has its outer face closed by a exible diaphragm 42 irmly clamped by its edges to the periphery of the disc as shown at 43. Considering Fig. 2 of the drawing, it will appear that two laterally curved reinforcing members 44 are disposed on opposed sides of the central portion of the diaphragm 42 and these members are secured in position by a bolt or screw 45, to which is attached a swiveled link or coupler element 46 and this element is connected to a bolt or line coupling member 47 slidable in an opening in the post 11, as seen in Fig. 2. The bolt 47 has, outwardly of the post 11, a loop, with which -a mooring line 48 is connected. Arranged on the bolt 47, between the element 46 and a dish-shaped plate adjacent the post 11, is a spring 49 which normally supports the diaphragm in the exed position illustratedY in Fig. 2.

Arranged on the bolt adjacent the post 11 is a packing and cushioning block 49a. Secured to the bolt, intermediate 49a and the element 46, is an Iabutment 50 which is adapted to engage the block 49a made of rubber in checking movement of the bolt 47 and diaphragm 42 in outward movement of the bolt 47 n the post 11, thus absorbing the shock in this movement or operation of the bolt.

With this construction it will be clear that as the boat rides upon the water Aan intermittent pull on the mooring line 48 will cause the diaphragm 42 to move into and out of the shell 40, thereby creating an intermittent suction through the tube 21 to the chamber 17. On the exhaust Ifrom the chamber 17 the valve 28 will open, but the valve 24 will be held closed, sucking water into the chamber 17.

On the other stroke of the diaphragm the water within the cylinder 17 will be forced past the valve 24, out of the boat. By the pull on the mooring line there is a constant pumping Aof water out of the boat so long as the water is high enough to reach the valve 28. As soon, however, as the water is so lowv that the suction no longer draws the water into the chamber 17 the float 37 will drop, holding the valve open thereafter, until the water comes into the boat. The suction created by the diaphragm 42 will do nothing except to blow air in and out past the valve 28.

What I claim is:

1. A boat pump mechanism, comprising a dish-shaped pump casing, a diaphragm closing one side of the casing, the other side of the casing having an opening, a bo-at connection with which the mechanism is employed, having on a wall thereof, adjacent the upper portion of the boat, an aperture opening through both surfaces of said wall, a mooring line coupling member slidably mounted in said aperture, said aperture and member being in alinement with the central portion of said diaphragm, means attached to one end of said member for coupling said member with the central portion of said diaphragm, means for gracing said casing on the wall of the boat, tensional means on said member between the wall of the boat and said first named means for norm-ally supporting the diaphragm in exed position in said casing, and a yieldable block on said member adjacent the wall of the boat for checking movement of said member in said aperture.

2. The combination with `a boat having an aperture passing through a wall of the boat, of a pump mechanism comprising a diaphragm suction pump, crcumferentially spaced bolts on the pump and xed to said wall of the boat for supporting the pump on the interior of said wall, a bolt-like mooring line coupling member arranged in said aperture and exposed externally of said wall, the

inner end of said member being in alinement with thecentral portion of said pump, means forming a swivel coupling of the inner end of said member with the diaphragm of said pump, and a coil spring on said member between said last named means and said wall of the boat for moving said member in one direction in exingthe pump diaphragm in onedirection.

References Cited in the le of this patent UNITED STATES PATENTS Nutt Dec. 10, 1929 Von Kohler Sept. 13, 1932 Herrick et al Jan. 6, 1953 Skovranek n June 23, 1959 

